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Fig. 3. Change in preferred body temperature (Tb) over time of
control, sham-operated and preoptic area (POA)-lesioned toads injected into
the lymph sac at time zero with either (A) pyrogen-free saline or (B)
lipopolysaccharide (LPS) at a dose of 200 µg kg-1 body mass. A
non POA-lesioned group injected with LPS is also plotted. Arrows indicate the
time of injection. Values are means ± S.E.M. The asterisk indicates
significant difference (P<0.05) from the control group at the same
time points. Numbers in parentheses indicate the number of animals.